Ionia Weather Forecast
- 36
- 70
Rain Likely
- 30
- 45
Chance Snow Showers
- 38
- 60
Sunny
- 40
- 65
Partly Sunny
- 40
- 64
Partly Sunny
- 38
- 62
Mostly Sunny
Today 16 Oct Ontario
Periods of rain Early, then Periods of rain with a chance of Thunderstorms through early afternoon. A chance of Showers late. Warm with Highs Ranging from the mid 60s on the Hilltops to around 70 across the lower Elevations. South Winds 10 to 20 Mph, becoming west with Gusts up to 35 Mph. Chance of rain near 100 percent.
Tonight 16 Oct Ontario
Showers likely. Much cooler. Less humid with Lows in the mid 30s. Northwest Winds 10 to 15 Mph with Gusts up to 30 Mph in the evening. Chance of rain 70 percent.
Ionia Temperature Statistics
October Temperature
Rochester, Greater Rochester International Airport (15.5 miles)
Lowest 6 October, 2026
36.6 °FAverage October
57.5 °FHighest 13 October, 2026
81 °F
Climate (2021–2026)
Rochester, Greater Rochester International Airport (15.5 miles)
Average Low 2021–2026
42.2 °FAverage 2021–2026
50.7 °FAverage High 2021–2026
59.5 °F